<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input @clear="getUserList" clearable placeholder="请输入内容" v-model="queryInfo.query">        
                        <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table
                :data="userList"
                style="width: 100%"
                border
                stripe>
                <el-table-column
                    type="index"
                    label="#">
                </el-table-column>
                <el-table-column
                    prop="username"
                    label="姓名"
                    width="180">
                </el-table-column>
                <el-table-column
                    prop="email"
                    label="邮箱"
                    width="180">
                </el-table-column>
                <el-table-column
                    prop="mobile"
                    label="电话">
                </el-table-column>
                <el-table-column
                    prop="role_name"
                    label="角色">
                </el-table-column>
                <el-table-column
                    prop="mg_state"
                    label="状态">
                    <template slot-scope="scope">
                        <el-switch
                            v-model="scope.row.mg_state"
                            @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="edit(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button @click="deleteUserById(scope.row.id)" type="danger" icon="el-icon-edit" size="mini"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
                                <el-button @click="setRole(scope.row)" type="warning" icon="el-icon-edit" size="mini"></el-button>
                        </el-tooltip>              
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog @close="addDialogClosed"
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            >
            <!-- 内容主体区域 -->
            <span>
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password" type="password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
            </span>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
                <el-button type="info" @click="addDialogClosed">重置</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog @close="eidtDialogClosed"
            title="修改用户信息"
            :visible.sync="eidtDialogVisible"
            width="50%"
            >
        
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
            
            <span slot="footer" class="dialog-footer">
                <el-button @click="eidtDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="eidtUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog @close="setRoleDialogClosed"
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            >
            <div>
                <p>当前的用户:{{userinfo.username}}</p>
                <p>当前的角色:{{userinfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="selecedRoleID" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data(){
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }

        return {
            // 获取用户列表的参数对象
            queryInfo:{
                query:'',
                // 当前的页数
                pagenum:1,
                // 当前每页显示多少条
                pagesize:5
            },
            userList:[],
            total:0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            // 添加用户的表单数据
            addForm:{username:'',
            password:'',
            email:'',
            mobile:''},
            // 添加表单的验证规则对象
            addFormRules:{
                username:[{required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名长度在3-10个字符之间',trigger:'blur'}
                ],
                password:[{required:true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'密码长度在6-15个字符之间',trigger:'blur'}
                ],
                email:[{required:true,message:'请输入邮箱',trigger:'blur'},
                { validator: checkEmail, trigger: 'blur' }
                ],
                mobile:[{required:true,message:'请输入手机号',trigger:'blur'},
                { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改表单的显示或隐藏
            eidtDialogVisible:false,
            // 修改表单的容器
            editForm:{},
            // 修改表单的验证规则对象
            editFormRules:{
                email:[{required:true,message:'请输入邮箱',trigger:'blur'},
                { validator: checkEmail, trigger: 'blur' }],
                mobile:[{required:true,message:'请输入手机号',trigger:'blur'},
                { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible:false,
            // 需要被分配角色用户信息
            userinfo:{},
            // 所有角色的数据列表
            rolesList:[],
            // 已选中的角色ID值
            selecedRoleID:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res}=await this.$http.get('users',{params:this.queryInfo});
            if(res.meta.status!==200){
                return this.$message.error('获取用户列表失败')
            }
            this.userList=res.data.users
            this.total=res.data.total
        },
        handleSizeChange(val) {
            //console.log(val);
            this.queryInfo.pagesize=val
            this.getUserList()
        },
        handleCurrentChange(val) {
            this.queryInfo.pagenum=val
            this.getUserList()
        },
        // 监听SWITCH开关状态的改变
        async userStateChanged(userinfo){
            console.log(userinfo);
            const {data:res}=await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status!==200){
                userinfo.mg_state=!userinfo.mg_state
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新用户状态成功')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户

        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid){
                    return
                }
                // 可以发起添加用户的请求
                const {data:res}=await this.$http.post('users',this.addForm)
                if(res.meta.status!=201){
                    this.$message.error('添加用户失败')
                }
                this.$message.success('添加用户成功')
                // 关闭对话框
                this.addDialogVisible=false
                // 重新获取用户列表
                this.getUserList()
            })
        },
        // 修改用户事件
        async edit(id){
            this.eidtDialogVisible=true
            const {data:res}=await this.$http.get('users/'+id);
            if(res.meta.status!==200){
                return this.$message.error('修改用户信息发生错误')
            }
            this.editForm=res.data
        },
        // 监听修改用户对话框关闭事件
        eidtDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },

        // 修改表单信息的预验证
        eidtUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid){
                    console.log('表单信息预验证不通过');
                }
                const {data:res}=await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
                if(res.meta.status!=200){
                    return this.$message.error('提交修改用户信息发生错误')
                }

                // 首先关闭表单
                this.eidtDialogVisible=false
                // 重新渲染页面
                this.getUserList()
                // 提交成功信息
                this.$message.success('提交修改用户信息成功')
            })
        },

        // 删除表单信息按钮触发事件
        async deleteUserById(id){
            const confirmRsult=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err=>err)
            if(confirmRsult!=='confirm'){
                return this.$message.info('已取消删除')
            }
            console.log('确认删除');
            const {data:res}=await this.$http.delete('users/'+id)
                if(res.meta.status!=200){
                    return this.$message.error('删除用户信息发生错误')
                }
                // 重新渲染页面
                this.getUserList()
                // 提交成功信息
                this.$message.success('提交修改用户信息成功')
        },

        async setRole(userinfo){
            // 获取所有的角色列表
            const {data:res}=await this.$http.get('roles')
            if(res.meta.status!=200){
                return this.$message.error('获取角色列表失败')
            }
            this.rolesList=res.data
            this.userinfo=userinfo
            this.setRoleDialogVisible=true
        },
        // 点击按钮分配角色
        async saveRoleInfo(){
            if(!this.selecedRoleID){
                return this.$message.error('请选择要分配的角色')
            }
            const {data:res}=await this.$http.put(`users/${this.userinfo.id}/role`,{rid:this.selecedRoleID})
            if(res.meta.status!==200){
                return this.$message.error('更新角色失败')
            }
            this.$message.success('更新角色成功')
            this.getUserList();
            this.setRoleDialogVisible=false
        },

        // 关闭分配角色对话框 清空数据
        setRoleDialogClosed(){
            this.selecedRoleID=''
            this.userinfo={}
        }
    }   
}
</script>


<style lang="less" scoped>
</style>